CN109633323A - A kind of REgulatable reactor load test system - Google Patents
A kind of REgulatable reactor load test system Download PDFInfo
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- CN109633323A CN109633323A CN201811584488.1A CN201811584488A CN109633323A CN 109633323 A CN109633323 A CN 109633323A CN 201811584488 A CN201811584488 A CN 201811584488A CN 109633323 A CN109633323 A CN 109633323A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
The present invention relates to load test testing fields, in particular to a kind of REgulatable reactor load test system, including electric source for test purposes cabinet, distribution transformer, pressure regulator and intermediate transformer, electric source for test purposes cabinet, distribution transformer, pressure regulator and intermediate transformer are sequentially connected, intermediate transformer is in parallel with REgulatable reactor to be measured, is parallel with dynamic capacitance compensating device between intermediate transformer and REgulatable reactor to be measured；It further include current transformer and voltage transformer, current transformer primary side and REgulatable reactor return circuit coupling to be measured, Current Transformer Secondary side and low power factor meter form closed circuit, and voltage transformer primary side is connected in parallel on the both ends of REgulatable reactor to be measured.Substantial effect of the invention is: the capacity of investment capacitor group is adjusted by dynamic, so that total output electric current remains at lower value to REgulatable reactor to be measured during the test, so as to use the test for completing larger capacity REgulatable reactor compared with the transformer of low capacity.
Description
Technical field
The present invention relates to load test testing field, in particular to a kind of REgulatable reactor load test system.
Background technique
The reactor taken in electric system common are current-limiting reactor and shunt reactor.220kV,110kV,
Reactor in 35kV, 10kV power grid is the charging capacitive reactive power for absorbing cable route.It can be by adjusting electricity in parallel
The output capacity of anti-device adjusts working voltage.Super-pressure shunt reactor has the related operation shape of improvement Power System Reactive Power
The function of condition reduces the transient overvoltage of power frequency, improves long feeder if generated capacity effect on light unloaded or light load route
The voltage's distribiuting of road makes reactive power in-situ balancing as far as possible in light hours route, and prevents reactive power from not conforming to
Reason flows while also mitigating the power loss on route.REgulatable reactor is the direction of current reactor application, regulative reactance
Device needs to carry out performance detection after manufacture.REgulatable reactor is accessed into the transformer in workshop, gradually adjusts REgulatable reactor
Reactance value until rated value.During the test, the transformer in workshop needs to bear biggish electric current.With power grid entirety
The capacity of the rising of capacity, the REgulatable reactor of manufacturer's production also rises with it, and causes the electric current generated in test process far super
Cross the electric current that transformer in workshop is able to bear.If upgrading transformer capacity at this time, need to pay high installation charge.
And by compensation shunt capacitor, total electric current can be effectively reduced, the adjustable electric of high capacity can be carried out without upgrading transformer
The detection of anti-device.But lack the equipment for reducing REgulatable reactor test total current using compensating electric capacity at present.
China Patent Publication No. CN106053922B, publication date on August 31st, 2018, a kind of entitled use of innovation and creation
In the reactor test machine of electric performance test, including rack and the voltage test device being arranged in the rack, voltage-withstand test
Device and feed device, voltage test device include voltage tester machine and the plug device being arranged on the voltage tester machine and
Reactor station slot, voltage tester function carry out horizontal sliding, plug device and voltage tester machine along rack by the first cylinder
Electrical connection, reactor station slot are electrically connected with pressure resistant testing device.Its voltage that can be realized reactor and pressure-resistant flowing water are tested,
The plug device that need to only reactor plug be inserted on voltage tester machine, reactor test machine will carry out voltage automatically and pressure resistance is surveyed
Examination, meeting automatic ejection reactor plug after test, facilitates and flows into next station.Disadvantage is that after boosting not
Have and promote test capability to test product capacity because source side capacity be it is fixed, increasing apparatus system can only change voltage, right
Power system capacity does not change.
Summary of the invention
Electric current is exported in REgulatable reactor test process the technical problem to be solved by the present invention is lacking to reduce at present
Equipment.Propose a kind of adjustable electric that overall output electric current in test process is effectively reduced using dynamic capacitance compensating device in parallel
Anti- device load test system.
In order to solve the above technical problems, the technical solution used in the present invention are as follows: a kind of REgulatable reactor load test system
System, including electric source for test purposes cabinet, distribution transformer, pressure regulator and intermediate transformer, the electric source for test purposes cabinet, distribution transformer
Device, pressure regulator and intermediate transformer are sequentially connected, and intermediate transformer is in parallel with REgulatable reactor 10 to be measured, intermediate transformer with
Dynamic capacitance compensating device is parallel between REgulatable reactor 10 to be measured.By dynamic capacitance compensating device dynamically by capacitor with
REgulatable reactor 10 to be measured is in parallel, forms minor loop entirety, reduces whole external electric current, to reduce to intermediate transformation
The demand of device and distribution transformer capacity.
Preferably, further include current transformer and voltage transformer, current transformer primary side and regulative reactance to be measured
10 return circuit coupling of device, Current Transformer Secondary side and low power factor meter form closed circuit, and voltage transformer primary side is simultaneously
The both ends of REgulatable reactor 10 to be measured are associated in, voltage transformer secondary side is connect with low power factor meter.Current transformer can
With the electric current in real-time monitoring 10 circuit of REgulatable reactor to be measured, voltage transformer can monitor 10 both ends of REgulatable reactor to be measured
Voltage, can note abnormalities in time.
Preferably, the dynamic capacitance compensating device includes a fixed capacitor group and several switched capacitors
Group, one fixed capacitor group and several switched capacitors groups are connected in parallel, the fixed capacitor group directly with
Intermediate transformer output line is connected in parallel, and the capacitor of the switched capacitors group passes through breaker and intermediate transformer respectively
Output line is connected in parallel.When fixed capacitor group REgulatable reactor capacity is smaller, completion test can be used directly, it can without being added
Switched capacitor group.Dynamic regulation is used in the capacitor of switched capacitors group and is connected to the capacitor at REgulatable reactor both ends
Amount, the test of the REgulatable reactor for larger capacity.
Preferably, the total capacity Q of the fixed capacitor group1It is determined by following formula:Wherein, U1For fixation
The voltage rating of capacitor, U2For the virtual voltage of fixed capacitor, U2Value takes 2KV, Q2Hold under virtual voltage for capacitor
Amount,I2For intermediate transformer high voltage side current, I2Meet I2*K≤I1, I1For power cabinet rated output electricity
Stream, K are intermediate transformer low pressure and high voltage variable ratio, I2By manually choosing in above formula limitation range.
Preferably, the total capacity Q of the switched capacitors group3It is determined by following formula:Wherein, U3For can
The voltage rating of switched capacitor, U4For the virtual voltage of switched capacitors, U2Value obtained by test site measurement, Q4For
Capacitor capacity under virtual voltage,I4For intermediate transformer high voltage side current,I1
For power cabinet output-current rating, K is intermediate transformer low pressure and high voltage variable ratio.
Preferably, further including automatic switching device, the breaker is electric switch-on breaker, the automatic switching dress
It sets and passes through including detection driving circuit, electric pushrod, several microswitches and frizzen, the detection driving circuit input terminal
Current transformer is coupled with intermediate transformer output line, electric current in the detection driving circuit detection intermediate transformer output line,
When electric current is more than given threshold in intermediate transformer output line, the detection driving circuit driving electric pushrod elongation is described
Frizzen is fixedly mounted on output end of electric push rod, several described microswitch equidistant arrangements in frizzen extended travel,
The second end of several microswitches is connect with the electric switch-on device of a breaker respectively, several described fine motions are opened
The first end of pass connects to power supply.When electric current is more than given threshold in intermediate transformer output line, electric pushrod will extend,
The microswitch of frizzen triggering following makes its closure, electric switch-on device will be made to charge after microswitch closure, and then will be right
The breaker closing answered, the capacitor access for connecting the breaker, increases total appearance of the capacitor in parallel with REgulatable reactor
Amount, keeps capacitive load more balanced with inductive load, reduces the electric current of overall output.After test, manually pushed away electronic
Bar resets.
Preferably, the detection driving circuit includes rectifier bridge T1, resistance R1, resistance R2, capacitor C1, capacitor C2, MOS
Pipe M1, diode D1 and double-contact relay K1, rectifier bridge T1 input terminal are connect with current transformer output end, and rectifier bridge T1 is just
Pole output end is connect with resistance R1 first end and diode D1 anode, the cathode output end ground connection of rectifier bridge T1, diode D1
Cathode is connect with capacitor C1 first end, resistance R2 first end and metal-oxide-semiconductor M1 grid, resistance R1 second end, resistance R2 second end,
Capacitor C1 second end and metal-oxide-semiconductor M1 source grounding, metal-oxide-semiconductor M1 drain electrode are connect with double-contact relay K1 coil second end,
Double-contact relay K1 coil first end is connect with the normally-closed contact 1 of capacitor C2 first end and double-contact relay K1, capacitor
Cathode output end and ground connection, double-contact relay K1 stationary contact and DC power supply Vcc of the C2 second end as detection driving circuit
Connection, cathode output end of the normally opened contact 2 of double-contact relay K1 as detection driving circuit, detects driving circuit output end
It is connect with electric pushrod feeder ear.
Detect the working principle of driving circuit are as follows: when electric current is more than given threshold in intermediate transformer output line, electric current
The electric current of mutual inductor output flows through resistance R1 after rectified bridge T rectification, capacitor R1 both end voltage increases, passes through also above threshold value
Diode D1 charges to capacitor C1, and the charge rate of capacitor C1 is made to be greater than the discharge rate by resistance R2, capacitor C1 voltage liter
Cut-in voltage that is high and being finally higher than metal-oxide-semiconductor M1, metal-oxide-semiconductor M1 conducting make the coil of double-contact relay K1 be powered, double-contact after
Electric appliance K1 normally opened contact 2 is connected, and powers for electric pushrod, makes its elongation, and capacitor C2 is by making the coil of double-contact relay K1
And metal-oxide-semiconductor M1 electric discharge, when capacitor C2 electricity exhausts, double-contact relay K1 normally opened contact 2 is disconnected, and electric pushrod power loss is stopped
It only extends, the capacity of capacitor C2 is rationally set, electric pushrod in discharge process is made just to trigger next adjacent microswitch；
After the normally-closed contact 1 of double-contact relay K1 is connected, capacitor C2 will quickly fill with electricity, if the electric current of current transformer output is still
Higher than threshold value, capacitor C1 can then keep high voltage, be held on metal-oxide-semiconductor M1, and double-contact relay K1 recloses normally closed
Contact 2, extends electric pushrod again, if capacitor C1 voltage after resistance R2 electric discharge is lower than the cut-in voltage of metal-oxide-semiconductor M1,
Metal-oxide-semiconductor M1 is disconnected, and for the coil no current of double-contact relay K1 by being failure to actuate, electric pushrod keeps current location, until
Electric current terminates again above given threshold or test in intermediate transformer output line.
Preferably, the capacity of the switched capacitors group is less than fixed capacitor group.
Substantial effect of the invention is: the capacity of investment capacitor group is adjusted by dynamic, so that regulative reactance to be measured
Total output electric current remains at lower value to device during the test, so as to use the transformer compared with low capacity complete compared with
The test of large capacity REgulatable reactor.
Detailed description of the invention
Fig. 1 is one test system architecture schematic diagram of embodiment.
Fig. 2 is two automatic switching device structural schematic diagram of embodiment.
Fig. 3 is that embodiment two detects driver circuit schematic diagram.
Wherein: 1, distribution transformer, 2, power cabinet, 3, pressure regulator, 4, intermediate transformer, 401, intermediate transformer output
Line, 5, dynamic capacitance compensating device, 51, fixed capacitor group, 52, switched capacitors group, 521, breaker, 5211, electronic
Closing device, 522, microswitch, 6, current transformer, 7, voltage transformer, 8, detection driving circuit, 9, electric pushrod, 10,
REgulatable reactor to be measured.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, a specific embodiment of the invention is further described in detail.
Embodiment one:
A kind of REgulatable reactor load test system, as shown in Figure 1, being one test system architecture schematic diagram of embodiment, this implementation
Example includes electric source for test purposes cabinet 2, distribution transformer 1, pressure regulator 3 and intermediate transformer 4, electric source for test purposes cabinet 2, distribution transformer
Device 1, pressure regulator 3 and intermediate transformer 4 are sequentially connected, and intermediate transformer 4 is in parallel with REgulatable reactor 10 to be measured, intermediate transformation
Dynamic capacitance compensating device 5 is parallel between device 4 and REgulatable reactor to be measured 10.It is dynamic by dynamic capacitance compensating device 5
Capacitor is in parallel with REgulatable reactor 10 to be measured, it forms that minor loop is whole, reduces whole external electric current, to reduce pair
The demand of 1 capacity of intermediate transformer 4 and distribution transformer.
6 primary side of current transformer and 10 return circuit coupling of REgulatable reactor to be measured, 6 secondary side of current transformer and low-power
Factor meter forms closed circuit, and 7 primary side of voltage transformer is connected in parallel on the both ends of REgulatable reactor 10 to be measured, voltage transformer
7 secondary sides are connect with low power factor meter.The electricity in 10 circuit of REgulatable reactor to be measured can be monitored in real time in current transformer 6
Stream, voltage transformer 7 can monitor the voltage at 10 both ends of REgulatable reactor to be measured, can note abnormalities in time.
Embodiment two:
The present embodiment has done specific improvement to dynamic capacitance compensating device 5, and in the present embodiment, dynamic capacitance compensating device 5 is wrapped
A fixed capacitor group 51 and several switched capacitors groups 52 are included, a fixed capacitor group 51 can switching with several
Capacitor group 52 is connected in parallel, and fixed capacitor group 51 is directly connected in parallel with intermediate transformer output line 401, can switching capacitance
The capacitor of device group 52 passes through breaker 521 respectively and is connected in parallel with intermediate transformer output line 401.Fixed capacitor group 51 can
When adjusting reactor capacity smaller, completion test can be used directly, it is not necessary that switched capacitors group 52 is added.In switched capacitors
The capacitor of group 52 is used for dynamic regulation and is connected to the capacitance at REgulatable reactor both ends, the REgulatable reactor for larger capacity
Test.
The total capacity Q of fixed capacitor group 511It is determined by following formula:Wherein, U1For the volume of fixed capacitor
Constant voltage, U2For the virtual voltage of fixed capacitor, U2Value takes 2KV, Q2For capacitor under virtual voltage capacity,I2For 4 high voltage side current of intermediate transformer, I2Meet I2*K≤I1, I1For power cabinet 2 rated output electricity
Stream, K are 4 low pressure of intermediate transformer and high voltage variable ratio, I2By manually choosing in above formula limitation range.
The total capacity Q of switched capacitors group 523It is determined by following formula:Wherein, U3For switched capacitors
Voltage rating, U4For the virtual voltage of switched capacitors, U2Value obtained by test site measurement, Q4It is capacitor in reality
Capacity under voltage,I4For 4 high voltage side current of intermediate transformer,I1For 2 volume of power cabinet
Surely electric current is exported, K is 4 low pressure of intermediate transformer and high voltage variable ratio.
Breaker 521 is electric switch-on breaker 521, as shown in Fig. 2, being two automatic switching device structural representation of embodiment
Figure, automatic switching device include detection driving circuit 8, electric pushrod 9, several microswitches 522 and frizzen, detection driving
8 input terminal of circuit is coupled by current transformer 6 with intermediate transformer output line 401, and detection driving circuit 8 detects intermediate transformation
Electric current in device output line 401, when electric current is more than given threshold in intermediate transformer output line 401, detection driving circuit 8 is driven
Electric pushrod 9 extends, and frizzen is fixedly mounted on 9 output end of electric pushrod, several 522 equidistant arrangements of microswitch are triggering
In bar extended travel, the second end of several microswitches 522 connects with the electric switch-on device 5211 of a breaker 521 respectively
It connects, the first end of several microswitches 522 connects to power supply.When electric current is more than setting in intermediate transformer output line 401
When threshold value, electric pushrod 9 will extend, after the microswitch 522 of frizzen triggering following is closed its closure, microswitch 522
Electric switch-on device 5211 will be made to charge, and then corresponding breaker 521 will be closed a floodgate, the capacitor for connecting the breaker 521
Access increases the total capacity of the capacitor in parallel with REgulatable reactor, keeps capacitive load more balanced with inductive load, reduces whole
The electric current of body output.After test, manually electric pushrod 9 is resetted.
As shown in figure 3, detecting 8 schematic diagram of driving circuit for embodiment two, detection driving circuit 8 includes rectifier bridge T1, electricity
Hinder R1, resistance R2, capacitor C1, capacitor C2, metal-oxide-semiconductor M1, diode D1 and double-contact relay K1, rectifier bridge T1 input terminal and electricity
The connection of 6 output end of current transformer, rectifier bridge T1 cathode output end are connect with resistance R1 first end and diode D1 anode, are rectified
The cathode output end of bridge T1 is grounded, and diode D1 cathode and capacitor C1 first end, resistance R2 first end and metal-oxide-semiconductor M1 grid connect
Connect, resistance R1 second end, resistance R2 second end, capacitor C1 second end and metal-oxide-semiconductor M1 source grounding, metal-oxide-semiconductor M1 drain electrode with
The connection of double-contact relay K1 coil second end, double-contact relay K1 coil first end and capacitor C2 first end and double-contact
The normally-closed contact 1 of relay K1 connects, cathode output end and ground connection of the capacitor C2 second end as detection driving circuit 8, double touchings
Point relay K1 stationary contact is connect with DC power supply Vcc, and the normally opened contact 2 of double-contact relay K1 is as detection driving circuit 8
Cathode output end, detection 8 output end of driving circuit connect with 9 feeder ear of electric pushrod.Remaining structure is the same as embodiment one.
Detect the working principle of driving circuit 8 are as follows: when electric current is more than given threshold in intermediate transformer output line 401,
The electric current that current transformer 6 exports flows through resistance R1 after rectified bridge T rectification also above threshold value, and capacitor R1 both end voltage increases,
It is charged by diode D1 to capacitor C1, the charge rate of capacitor C1 is made to be greater than the discharge rate by resistance R2, capacitor C1 electricity
Pressure increases and is finally higher than the cut-in voltage of metal-oxide-semiconductor M1, and metal-oxide-semiconductor M1 conducting makes the coil of double-contact relay K1 be powered, double touchings
Point relay K1 normally opened contact 2 is connected, and powers for electric pushrod 9, makes its elongation, capacitor C2 is by making double-contact relay K1's
Coil and metal-oxide-semiconductor M1 electric discharge, when capacitor C2 electricity exhausts, double-contact relay K1 normally opened contact 2 is disconnected, electric pushrod 9
Power loss stops elongation, and the capacity of capacitor C2 is rationally arranged, and triggers electric pushrod 9 in discharge process just next adjacent micro-
Dynamic switch 522；After the normally-closed contact 1 of double-contact relay K1 is connected, capacitor C2 will quickly fill with electricity, if current transformer 6
The electric current of output is still higher than threshold value, and capacitor C1 can then keep high voltage, is held on metal-oxide-semiconductor M1, double-contact relay K1
Normally-closed contact 2 is reclosed, extends electric pushrod 9 again, if capacitor C1 voltage after resistance R2 electric discharge is lower than metal-oxide-semiconductor M1's
Cut-in voltage, then metal-oxide-semiconductor M1 is disconnected, and the coil no current of double-contact relay K1 by being failure to actuate, work as by the holding of electric pushrod 9
Front position, until in intermediate transformer output line 401 electric current again above given threshold or test terminate.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (8)
1. a kind of REgulatable reactor load test system, including electric source for test purposes cabinet, distribution transformer, pressure regulator and intermediate change
Depressor, the electric source for test purposes cabinet, distribution transformer, pressure regulator and intermediate transformer are sequentially connected, intermediate transformer with to
It is in parallel to survey REgulatable reactor, which is characterized in that
Dynamic capacitance compensating device is parallel between intermediate transformer and REgulatable reactor to be measured.
2. a kind of REgulatable reactor load test system according to claim 1, which is characterized in that
It further include current transformer and voltage transformer, current transformer primary side and REgulatable reactor return circuit coupling to be measured, electricity
Current transformer secondary side and low power factor meter form closed circuit, and voltage transformer primary side is connected in parallel on regulative reactance to be measured
The both ends of device, voltage transformer secondary side are connect with low power factor meter.
3. a kind of REgulatable reactor load test system according to claim 1 or 2, which is characterized in that
The dynamic capacitance compensating device includes a fixed capacitor group and several switched capacitors groups, one solid
Determine capacitor group and several switched capacitors groups are connected in parallel, the fixed capacitor group is directly exported with intermediate transformer
Line is connected in parallel, and the capacitor of the switched capacitors group passes through breaker company in parallel with intermediate transformer output line respectively
It connects.
4. a kind of REgulatable reactor load test system according to claim 3, which is characterized in that
It further include automatic switching device, the breaker is electric switch-on breaker, and the automatic switching device includes that detection is driven
Dynamic circuit, electric pushrod, several microswitches and frizzen, the detection driving circuit input terminal by current transformer and
The coupling of intermediate transformer output line, the detection driving circuit detect electric current in intermediate transformer output line, work as intermediate transformer
When electric current is more than given threshold in output line, the detection driving circuit driving electric pushrod elongation, the fixed peace of the frizzen
Mounted in output end of electric push rod, several described microswitch equidistant arrangements are in frizzen extended travel, and described several are micro-
The second end of dynamic switch is connect with the electric switch-on device of a breaker respectively, and the first end of several microswitches is equal
It connects to power supply.
5. a kind of REgulatable reactor load test system according to claim 4, which is characterized in that
The detection driving circuit includes rectifier bridge T1, resistance R1, resistance R2, capacitor C1, capacitor C2, metal-oxide-semiconductor M1, diode D1
With double-contact relay K1, rectifier bridge T1 input terminal is connect with current transformer output end, rectifier bridge T1 cathode output end and electricity
Hinder R1 first end and the connection of diode D1 anode, the cathode output end ground connection of rectifier bridge T1, diode D1 cathode and capacitor C1
First end, resistance R2 first end and the connection of metal-oxide-semiconductor M1 grid, resistance R1 second end, resistance R2 second end, capacitor C1 second end
And metal-oxide-semiconductor M1 source grounding, metal-oxide-semiconductor M1 drain electrode are connect with double-contact relay K1 coil second end, double-contact relay
K1 coil first end is connect with the normally-closed contact 1 of capacitor C2 first end and double-contact relay K1, capacitor C2 second end conduct
Detect driving circuit cathode output end and ground connection, double-contact relay K1 stationary contact connect with DC power supply Vcc, double-contact after
Cathode output end of the normally opened contact 2 of electric appliance K1 as detection driving circuit, detection driving circuit output end and electric pushrod supply
Electric end connection.
6. a kind of REgulatable reactor load test system according to claim 1 or 2, which is characterized in that it is described can switching
The capacity of capacitor group is less than fixed capacitor group.
7. it is negative to be suitable for a kind of REgulatable reactor as claimed in claim 3 for a kind of determination method of fixed capacitor pool-size
Carry pilot system, which is characterized in that
The total capacity Q of the fixed capacitor group1It is determined by following formula:
Wherein, U1For the voltage rating of fixed capacitor, U2For the virtual voltage of fixed capacitor, U2Value takes
2KV, Q2For capacitor under virtual voltage capacity,I2For intermediate transformer high voltage side current, I2Meet
I2*K≤I1, I1For power cabinet output-current rating, K is intermediate transformer low pressure and high voltage variable ratio, I2In above formula limitation range
By manually choosing.
8. a kind of determination method of switched capacitors pool-size is suitable for a kind of REgulatable reactor as claimed in claim 3
Load test system, which is characterized in that
The total capacity Q of the switched capacitors group3It is determined by following formula:
Wherein, U3For the voltage rating of switched capacitors, U4For the virtual voltage of switched capacitors, U2's
Value is obtained by test site measurement, Q4For capacitor under virtual voltage capacity,I4For intermediate transformer
High voltage side current,I1For power cabinet output-current rating, K is intermediate transformer low pressure and high voltage variable ratio.
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| CN111157828A (en) * | 2020-02-26 | 2020-05-15 | 东莞立德电子有限公司 | Load test circuit and test method for alternating current reactor |
| CN111487485A (en) * | 2019-12-31 | 2020-08-04 | 杭州银湖电气设备有限公司 | Three-phase unbalanced load simulation test device and method thereof |
| CN112986751A (en) * | 2021-02-07 | 2021-06-18 | 国网陕西省电力公司电力科学研究院 | Test platform for function detection of arc suppression coil complete device and operation method thereof |
| CN114200225A (en) * | 2021-11-12 | 2022-03-18 | 辽宁芯峻电气有限公司 | Cabinet type dry hollow current-limiting reactor test method |
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